English verb conjugation
CAN KNACKER

Regular verb: knacker - knackered - knackered

Affirmation

Simple form	V-ing form
I can knacker you can knacker he can knacker we can knacker you can knacker they can knacker	I can be knackering you can be knackering he can be knackering we can be knackering you can be knackering they can be knackering
Perfect	V-ing perfect
I can have knackered you can have knackered he can have knackered we can have knackered you can have knackered they can have knackered	I can have been knackering you can have been knackering he can have been knackering we can have been knackering you can have been knackering they can have been knackering

Negation

Simple form	V-ing form
I cannot knacker you cannot knacker he cannot knacker we cannot knacker you cannot knacker they cannot knacker	I cannot be knackering you cannot be knackering he cannot be knackering we cannot be knackering you cannot be knackering they cannot be knackering
Perfect	V-ing perfect
I cannot have knackered you cannot have knackered he cannot have knackered we cannot have knackered you cannot have knackered they cannot have knackered	I cannot have been knackering you cannot have been knackering he cannot have been knackering we cannot have been knackering you cannot have been knackering they cannot have been knackering

Interrogative form

Simple form	V-ing form
can I knacker? can you knacker? can he knacker? can we knacker? can you knacker? can they knacker?	can I be knackering? can you be knackering? can he be knackering? can we be knackering? can you be knackering? can they be knackering?
Perfect	V-ing perfect
can I have knackered? can you have knackered? can he have knackered? can we have knackered? can you have knackered? can they have knackered?	can I have been knackering? can you have been knackering? can he have been knackering? can we have been knackering? can you have been knackering? can they have been knackering?

Interro-negative form

Simple form	V-ing form
can I not knacker? can you not knacker? can he not knacker? can we not knacker? can you not knacker? can they not knacker?	can I not be knackering? can you not be knackering? can he not be knackering? can we not be knackering? can you not be knackering? can they not be knackering?
Perfect	V-ing perfect
can I not have knackered? can you not have knackered? can he not have knackered? can we not have knackered? can you not have knackered? can they not have knackered?	can I not have been knackering? can you not have been knackering? can he not have been knackering? can we not have been knackering? can you not have been knackering? can they not have been knackering?